Does this sound like your -- -- if it does a study in the journal pediatrics says it could be a warning sign. Researchers quiz 249. Mothers about how often their two and three year old snort. Those who snort more than two times per week. Eventually -- worst overall behavioral functioning especially with hyper activity attention and depression. The study also found a strong association between persistent snorers and low socio economic status. Being breast fed for less than twelve months and higher exposure to tobacco. The authors say parents and pediatricians. Should scream two and three year old for persistent snoring. To help prevent behavioral problems later in life. With this medical minute I'm doctor Timothy Johnson.

This transcript has been automatically generated and may not be 100% accurate.

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